Just curious to see if anyone else uses these fantastic blades? I've been using them for my last few shaves in my 23c and these blades have given me the smoothest, most irritation free shaves to date. I had previously been using Iridiums and thought it could not get much better than that, but the blacks proved me wrong. I think these will be my go to blades for the time being. I'm curious to see how these have worked for others.